Yes

you do need a jacket based on the weather in Bronx, NY, USA 1 second ago

Why? Because it's pretty chilly!
58°F14°C & Cloudy

Wind is 10 mph16 km/h from the Southeast, gusting to 18 mph29 km/h
April 21
5pm57°F14°C10 mph16 km/h SoutheastCloudy
6pm57°F14°C9 mph15 km/h SoutheastCloudy
7pm55°F13°C8 mph14 km/h SoutheastCloudy
8pm55°F13°C8 mph13 km/h SoutheastCloudy
9pm54°F12°C8 mph13 km/h SouthCloudy
10pm53°F12°C8 mph13 km/h SouthCloudy
11pm53°F12°C7 mph12 km/h SouthCloudy
April 22
12am53°F12°C7 mph11 km/h SouthCloudy
1am53°F12°C7 mph11 km/h SouthDrizzle
2am53°F12°C7 mph11 km/h SouthCloudy
3am53°F12°C6 mph9 km/h SouthMostly Cloudy
4am54°F12°C4 mph6 km/h SouthMostly Cloudy
DateLowHighWindDayNight
April 2146°F8°C59°F15°C7 mph12 km/h from SoutheastMostly CloudyDrizzle
April 2253°F12°C77°F25°C8 mph12 km/h from WestMostly CloudyMostly Cloudy
April 2351°F11°C72°F22°C5 mph8 km/h from NorthwestMostly ClearClear
April 2451°F10°C69°F21°C7 mph11 km/h from SouthMostly ClearPartly Cloudy
April 2549°F10°C72°F22°C8 mph13 km/h from SouthPartly CloudyRain
April 2655°F13°C71°F21°C9 mph15 km/h from SouthwestRainRain
April 2748°F9°C64°F18°C10 mph17 km/h from NorthMostly ClearMostly Clear

Yes

Low of 54°F12°C, High of 77°F25°C
Wind: 8 mph12 km/h
Precipitation: None

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